#include<stdio.h>
#include<string.h>


int main(int argc,char* argv[])
{
	if(argc!=2)
	{
		printf("Usage: %s [-x|-y|-c]\n",argv[0]);
		return 1;
	}
	const char* arg = argv[1];
	if(strcmp(arg,"-x")==0)
		printf("熊学瑜\n");
	else if(strcmp(arg,"-y")==0)
		printf("余世杰\n");
	else if(strcmp(arg,"-c"))
		printf("陈泰\n");
	else{
		
		printf("Usage: %s [-x|-y|-c]\n",argv[0]);
	}
	return 0;
}
